JPH02198080A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To prevent the damage of a magnetic recorder which is caused in an inactive state by using a pin having a sloping surface and a fixed member into which the pin is pressed and oscillating a magnetic head to separate it from a magnetic disk. CONSTITUTION:When a shaft 17 of a step motor is revolved, a rotary arm 14 rocks around a shaft 13 via a belt 20. Thus a magnetic head 4 attached to the arm 14 can rock the surface of a magnetic disk 2. A pin 6 having a sloping surface is pressed into a fixed member 7 which is fixed to a base frame via a lock screw 8. The pin 6 and a support spring 5 supporting the head 4 are set out of the outer circumference of the disk 2 and apart from the surface of the disk 2. Thus the disk 2 is separated from the head 4 in a simple structure. As a result, both the disk 2 and head 4 are never damaged in an inactive state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mechanism for separating a magnetic head of a magnetic recording device from a magnetic disk surface. [Prior Art] 1. Conventionally, in order to protect the recording surface of a magnetic disk during non-operation in a sealed magnetic recording device, a magnetic head is positioned within the recording surface (hereinafter referred to as a rad landing zone) and brought into contact with the magnetic disk. The main method was to let them go. 2. A mechanism for raising and lowering a magnetic head using power is known, as described in Japanese Unexamined Patent Publication No. 63-29351. [Problems to be Solved by the Invention] However, the method of prior art 1 has the following drawbacks because the magnetic disk and the magnetic head are in contact with each other. ■Since the magnetic disk and the magnetic head are in contact with each other, there is a drawback that the magnetic head can be damaged or the magnetic disk can be scratched due to vibrations, shocks, etc. during the process or during transportation. ■Since the magnetic disk and magnetic head are in contact with each other, if the magnetic device is left inactive for a long period of time, water droplets will condense on the contact surface and the magnetic disk and magnetic head will come into close contact with each other with great force. This had the disadvantage that the disk could not rotate. (2) Also, since the head landing zone is provided, the entire surface of the magnetic disk cannot be used as a recording surface, which is another drawback. Although the method of Prior Art 2 can solve the above-mentioned problems, it has the disadvantage that it uses power for raising and lowering the magnetic head and requires a large number of complicated parts for power transmission, resulting in an increase in cost. However, since it has a power and transmission mechanism, it requires a large amount of space and has the disadvantage that it cannot be used in a small magnetic recording device. Therefore, in order to solve these conventional problems, the present invention automatically separates the magnetic head from the magnetic disk surface without requiring special power for lifting and lowering the magnetic head, thereby preventing the magnetic disk and the magnetic disk from operating when the magnetic disk drive is not operating. The purpose is to prevent damage to the magnetic head. [Means for Solving the Problems] In order to solve the above problems, the present invention provides a mechanism for separating the magnetic head from the magnetic disk surface. The magnetic head is oscillated by the power of an actuator motor that oscillates the magnetic head, and the suspension supporting the magnetic head is engaged with a member having a slope fixed at the outer periphery of the magnetic disk or outside the outer periphery, and automatic fishing is performed. It is characterized by doing. [Example] Examples of the present invention will be described below based on the drawings. FIG. 1 is a plan view showing the magnetic recording device in a non-operating state. The magnetic disk 2 is fixed to a spindle motor attached to a base frame l by a clamp plate 21 and a set screw 22. The magnetic head 4 is swingably supported by a supporting spring 5 having a spring property acting in the direction of the magnetic disk surface. The support spring 5 is fixed to the head block 11 by a set screw 1O, and the head block 11 is fixed by a set screw 12 to one end of a rotor no arm 14 that swings around a rotating shaft 13 protruding from the base frame 1. . A flexible belt 20 fixed by a set screw 18 is wound around the shaft 17 of a step motor (actuator motor) attached to the base frame 1. One end is fixed to the rotary arm 14 by a pin 19, and the other end is fixed to the rotary arm 14 by a pin 19. It is fixed with a pin 19 to a pressurizing spring 16 which is fixed to the rotary arm 14 with a set screw 15. With the above structure, the belt 20 can be made flexible by rotating the shaft 17 of the step motor in clockwise and counterclockwise directions.
The rotary arm 14 can swing around the shaft 13 via the shaft 13. Therefore, the magnetic head 4 attached to the rotary arm 14 can also swing on the surface of the electric disk 2.1 The bin (member having a slope) 6 having the slope 24 of the present invention is attached to the fixed member 7. The fixing member 7 is press-fitted and is fixed to the base frame with a set screw 8. As shown in FIG. 2, the support spring 5 supporting the bottle 6 and the magnetic head 4 is in contact with the magnetic disk 2 outside the outer periphery and at a distance from the surface of the electric disk 2. To explain the operation, when the spindle motor rotates and reaches a certain steady rotation, the step motor operates and the shaft 17 rotates clockwise. Then, the flexible belt 20 is wound around the shaft 17.
works in the opposite direction. Therefore, the magnetic head 4 and the support spring 5 supporting the magnetic head 4 are connected to the magnetic disk 2.
begins to move toward the center. The support spring 5 moves along the slope 24 of the bottle 6, and the magnetic head 4 gradually approaches the surface of the magnetic disk 2. FIG. The support spring 5 is already further away from the slope of the bottle 6. However, in this state, the spindle motor is already rotating, so there is a slight gap 23 due to the air bearing effect.
The magnetic disk 2 and the magnetic head 4 are not in contact with each other. Recording and reproducing operations are possible from the state shown in FIG. 3, and the landing zone 3 of the prior art I can also be used as a recording surface. To return to the non-operating state, rotate the step motor shaft counterclockwise while keeping the spindle motor rotating. Then, the operation described above is reversed, and the support spring 5 is moved to the pin 6.
It moves along the slope 24 of the magnetic disk 2 and moves outward from the outer periphery of the magnetic disk 2 and away from the disk surface. The magnetic head 4 supported by the support spring 5 also performs the same movement and the spindle motor stops when it returns to the state shown in FIG. 2. If the angle θ of the slope portion 24 of the bottle 6 according to the present invention is set to a certain angle or less, the balance between the spring force and rigidity of the support spring 5 prevents the support spring 5 from tilting in the direction of the slope 24 of the bottle 6. This is a problem-free range. In addition, the set screw hole of the fixing member 7 into which the bottle 6 is press-fitted is an elongated hole 9, so that the position where the magnetic disk 2 and the magnetic head 4 (contact) can be adjusted. Although a bottle 6 having a slope 24 is used to separate the magnetic head 4 from the surface of the magnetic disk 2, a comb-shaped member in which the bottle 6 and the fixing member 7 are integrated may also be used. FIG. 4 shows the homeland of P shown in FIG. 1, with the head block 11 and magnetic head 4 fixed to the rotary arm 14.
1 is a front view showing a state in which the support spring 5 is attached; FIG. There is also. Effects of the Invention As described above, the present invention has a simple structure in which the bin 6 having the @4 faces 24 and the fixing member 7 into which it is press-fitted are used to separate the magnetic head 4 from the magnetic disk 2. This makes it possible to solve the conventional problems.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a non-operating state of the magnetic recording device according to the present invention, FIG. 2 is an enlarged cross-sectional view taken along line 8-A in FIG. 1 according to the present invention, and FIG. 3 is an operation of the magnetic recording device according to the present invention. FIG. 4 is an enlarged cross-sectional view taken along the line A-A in FIG. 1 in this state, and FIG. 4 is the homeland P in FIG. l ・ 2 ・ 3 ・ 5 ・ 6 ・ 7 ・ 8 ・ 10 ・ 11 ・ l 2 ・ 14 ・ l 5 ・Base frame, magnetic disk, conventional landing zone, magnetic head, support spring, bin (with slope)・Fixing member・Long set screw・Set screw・Head block・Set screw・Shaft・Rotary arm・Set screw 16...Preload spring 17...Step motor shaft (actuator motor) 18...・Set screw 19...Belt locking bottle and above Applicant Seiko Epson Co., Ltd. Agent Patent attorney Kizobe Suzuki (and 1 other person) Funeral map Figure 2 Figure 3

Claims (1)

[Claims] A magnetic recording device comprising at least one magnetic disk in a hermetically sealed container and at least one oscillating magnetic head that performs recording and reproduction by floating above the surface of the magnetic disk by rotation of the magnetic disk, wherein the magnetic head The magnetic head is oscillated by the power of an actuator motor that oscillates the magnetic head, and a support spring supporting the magnetic head is engaged with a member having an inclined surface fixed at the outer periphery of the magnetic disk or outside the outer periphery; A magnetic recording device characterized in that a magnetic head is separated from a magnetic disk surface.